Data Sheet
AD7292
SPECIFICATIONS
ADC SPECIFICATIONS
AVDD = 4.75 V to 5.25 V, DVDD = 1.8 V to 5.25 V, VREF = 1.25 V internal, VDRIVE = 1.8 V to 5.25 V, AGND = 0 V, TA = −40°C to +125°C,
unless otherwise noted. Specifications apply to single-ended mode only, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DC ACCURACY
Resolution
Integral Nonlinearity (INL)1
10
Bits
LSB
LSB
0.11
0.5
0.6
(AVDD − 4 × VREF) to AVDD input range
(AVDD − 4 × VREF) to AVDD input range
Differential Nonlinearity (DNL)1
Offset Error
0.1
3
0.99
8
12
1
LSB
mV
mV
mV
ppm/°C
% FS
% FS
% FS
ppm/°C
Offset Error Matching
Offset Error Drift
Gain Error
0.5
0.22
0.09
0.25
0.36
(AVDD − 4 × VREF) to AVDD input range
fIN = 10 kHz sine wave
Gain Error Matching
Gain Error Drift
DYNAMIC PERFORMANCE1
0.5
4.17
Signal-to-Noise Ratio (SNR)
Signal-to-Noise-and-Distortion (SINAD)
Ratio
61.5
61.5
dB
dB
Total Harmonic Distortion (THD)
Spurious-Free Dynamic Range (SFDR)
Channel-to-Channel Isolation
Full Power Bandwidth
−84
84.5
−80
60
dB
dB
dB
MHz
MHz
fIN = 3 kHz to 1000 kHz
At −3 dB (0 V to VREF input range)
At −0.1 dB (0 V to VREF input range)
3
CONVERSION RATE
Conversion Time
900
ns
See Table 5
Track-and-Hold Acquisition Time
Throughput Rate
45
625
ns
kSPS
ADC only; temperature sensor
disabled
150
kSPS
ADC and temperature sensor
ANALOG INPUT
Single-Ended Input Range
With Respect to AGND
0
0
0
4 × VREF
2 × VREF
VREF
V
V
V
With Respect to AVDD
Fully Differential Input Range
AVDD − 4 × VREF
−4 × VREF
−2 × VREF
−VREF
AVDD
V
V
V
V
+4 × VREF
+2 × VREF
+VREF
VIN0 and VIN1 inputs only
Input Capacitance
23
18
15
pF
pF
pF
µA
0 V to VREF input range
0 V to 2 × VREF input range
0 V to 4 × VREF input range
DC Input Leakage Current
INTERNAL REFERENCE
1
Reference Output Voltage
Reference Temperature Coefficient
1.245
1.25
13
1.255
V
At 25°C
ppm/°C
Rev. A | Page 3 of 40